diff --git a/include/wx/hash.h b/include/wx/hash.h
index 9415394e1a..0b3470f6d8 100644
--- a/include/wx/hash.h
+++ b/include/wx/hash.h
@@ -428,6 +428,8 @@ public:
     }
 
     void Clear() { wxHashTableBase::Clear(); }
+
+    size_t GetCount() const { return wxHashTableBase::GetCount(); }
 private:
     compatibility_iterator m_iter;
 };